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Local area connection seems OK - but cannot connect to internet

Posted on 2004-10-31
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Last Modified: 2012-06-21
Hi Experts:

My Windows XP Pro broadband connection (Comcast) was working fine until this morning. I found my PC with a black screen and had to re-boot it. Since then I cannot connect to the internet.

The router and modem are working fine as my laptop connects wirelessly, but connecting the modem directly to my PC via either ethernet or USB ports still doesn't work.

IP Config shows an IP of 169.254.129.204 which I know enough to know isn't right. IP Config /renew yields the error message: "unable to contact DHCP server". I've tried entering a manual IP address but that doesn't work. I've also tried a system restore to Saturday morning and switching off Norton and Windows firewalls - to no avail. The network icon in the system tray shows a connection at 100 mbs on my ethernet card, as does the network connections dialogue box.

I'm now out of ideas. All help gratefully received.

Max Davies
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Question by:MaxFL100
    32 Comments
     
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    Expert Comment

    by:Asta Cu
    Have you scanned for Virus/trojan/worm and Spyware?  Also checked the HOSTS file?
    http://www.experts-exchange.com/Web/Browser_Issues/Q_20975384.html
    http://www.experts-exchange.com/Web/Browser_Issues/Q_21149514.html

    Tried resetting the router/modem?

    Didn't install anything new or change settings?
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    Expert Comment

    by:Asta Cu
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    Expert Comment

    by:sunray_2003
    Hi MaxFL100,

    Try these

    a) Download this tool using your laptop http://www.spychecker.com/program/winsockxpfix.html
    get this to your PC , run it , Restart your computer and check if that would help

    b) Before restarting do this
    go to start --> run--> msconfig

    go to startup tab and disable all applications except anti-virus and firewall
    go to services tab and check "hide microsoft services" and then uncheck all services there

    c) After restarting , temporarily disable firewall and see if you can connect to internet

    d) In order to make sure your hardware is fine and the ethernet cable is fine , connect this PC to the modem directly using a new cable to see if that way you can connect to internet

    e) Use the same ethernet cable that you used to connect the PC to the router in the laptop and see if you can connect the laptop to the network that way. That will prove if there is anything wrong in the cable.

    Post back how it all goes

    SR..
    0
     

    Author Comment

    by:MaxFL100
    Experts:

    Thank you for the fast response.

    I should have noted in my question that I've run Webroot spyware checker with no problems reported. I've used MSconfig to switch off everything but the firewall, and I've rebooted the modem and the router and swapped the cables around, connecting the modem to my PC using the cable that now connects its to the router. I've also connected the cable modem to the PC by its USB port, and that doesn't make any difference, so it's not looking like a problem with the ethernet card.

    I've tried the winsock fix, which ran OK but didn't solve the problem. I've also run Hijack-This and can't see anything that might be to blame.

    When I run IPconfig I see an entry I haven't seen before:

    Tunnel adapter Teredo Tunneling Pseudo-Interface:

    and beneath that is the listing for DNS suffix etc, all of which are blank except by IP Address there is a ?.

    Does anyone know what that is and what I should do from here?

    Max
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    Expert Comment

    by:sunray_2003
    Max,

    Can you paste here what you see when you type in
    ipconfig /all   in your command prompt ?
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    Expert Comment

    by:Asta Cu
    Max, I just don't get this ip addres... 169.254.129.204 .... something you added from your ISP perhaps?  Did you check the HOSTS file for entries?  Have you tried AdAware SE Pro and configured it for deep scanning and include the HOSTS file?  Did you try Spybot S&D and include the Immunize function (after updates to definition files)?  I assume you did a thorough all drives/deep scan (heuristic scan) of all HDs with an updated viruscan program first, and turned off System Restore prior to any of this, but better ask.


    0
     
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    Expert Comment

    by:Asta Cu
    That ip address is unresponsive and of concern.
    0
     
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    Expert Comment

    by:sunray_2003
    astaec,
    > Max, I just don't get this ip addres... 169.254.129.204

    this is because the DHCP server is either not supplying the correct IP address or the computer is not getting the correct IP address supplied by the DHCP server in the router..
    0
     
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    Expert Comment

    by:sunray_2003
    MaxFL100,

    When you entered the IP address manually , make sure you entered these

    IP address :  192.168.0.102
    subnet mask: 255.255.255.0
    default gateway : 192.168.0.1

    primary DNS : 192.168.0.1
    secondary DNS : 4.2.2.2

    The above ones can vary depending on what the configuration you have on your router.
    Now once giving these , restart your computer and check
    0
     
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    Expert Comment

    by:Asta Cu
    Thanks, SR, for confirming that because, as I recall IP address is in the range 169.254.xxx.xxx, then this indicates that the DHCP client in your computer failed to contact a DHCP server on the network, and APIPA (Automatic Private IP Addressing) is enabled, and it has automatically assigned you a private IP address in the 169.254.xxx.xxx range. With such an address, you will not be able to work with the public Internet, nor even read the cable modem diagnostic pages. Possible causes for this are:

    Your PC/Mac booted up faster than the cable modem did, and the cable modem was not ready for service by the time the PC/Mac sent out its DHCP request. You should not boot up your PC/Mac until after the cable modem has finished its start-up sequence (see Flashing Lights), or you should leave your cable modem powered on continuously.
    A misconfigured firewall has prevented a DHCP lease being acquired: see Personal firewall configuration for cable modems.
    You have recently swapped the computer or network interface card connected to the cable modem, and the cable modem is blocking your access to the internet: see Swapping computers on the cable modem.
    You do not have a working ethernet/USB connection between your PC/Mac and the cable modem. Check cable and plugs, check ethernet LINK lights are lit at both ends, check ethernet speed and duplex settings.
    Your PC has multiple network interfaces and it is sending DHCP requests on an interface other than the one to the cable modem. Check your network configuration.
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    Expert Comment

    by:Steviek411
    This might sound strange but can you uninstall your NIC card from device manager, shut down and restart and let windows reinstall your driver. I've seen this before and reinstalling the card normally worked. It may be your TCPIP stack that is corrupted.
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    Author Comment

    by:MaxFL100
    I have only Webroot and Adaware spyware. I'll download and try the others.

    I've entered the suggested IP manually. When I run IPconfig /all this is what I get:

    Host Name: mainXP
    Primary DNs Suffix:
    Node Type: Unknown
    IP Routing Enabled: No
    Wins Proxy Enabled: No

    Ethernet Adapter:

    Connection Specific DNS Suffix:
    Description: SiS 900 PCI fast ethernet adapter
    Physical address: 00-0A-E6-DD-13-A5
    DHcp Enabled: No
    the IP address etc are as I entered them.

    Tunnel adapter Teredo Tunneling Pseudo-Interface:
     Physical Address: FF-FF-FF-FF-FF-FF-FF-FF
    DHCP Enabled: No
    IP Address: ?
    Default Gateway:
    NetBIOS over Tcpip: Disabled

    I'm confident the ethernet connection is OK to the modem.

    Max
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    Expert Comment

    by:sunray_2003
    Did you try the static IP address suggestion ?
    0
     

    Author Comment

    by:MaxFL100
    Yes - and the above resulted
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    Expert Comment

    by:sunray_2003
    MaxFL100,

    so set all the static ip address , restarted your computer and then gave ipconfig /all and it showed the above , right ?

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    Author Comment

    by:MaxFL100
    Yes. Do you know what:

    Tunnel adapter Teredo Tunneling Pseudo-Interface

    means? I've never seen it before.

    Max



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    Expert Comment

    by:sunray_2003
    Max

    take a look here
    http://www.experts-exchange.com/Networking/Q_20908922.html

    try the suggestions there.. check to see if you can have some assistance by that
    0
     

    Author Comment

    by:MaxFL100
    Thank you - I read the entire posting carefully and followed the procedure to reset Tcpip. The text log is as follows:

    deleted SYSTEM\CurrentControlSet\Services\Netbt\Parameters\EnableLmhosts
    reset   SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\AddressType
                old REG_DWORD = 1

    added   SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\DisableDynamicUpdate
    deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\IpAutoconfigurationAddress
    deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\IpAutoconfigurationMask
    deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\IpAutoconfigurationSeed
    reset   SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\RawIpAllowedProtocols
                old REG_MULTI_SZ =
                    0

    reset   SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\TcpAllowedPorts
                old REG_MULTI_SZ =
                    0

    reset   SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{959EB3A4-DA40-4BEC-8EFD-8A4D44FAEDFC}\UdpAllowedPorts
                old REG_MULTI_SZ =
                    0

    deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DontAddDefaultGatewayDefault
    deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\EnableIcmpRedirect
    deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\EnableSecurityFilters
    deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\SearchList
    deleted SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\UseDomainNameDevolution
    reset   Linkage\UpperBind for PCI\VEN_1039&DEV_0900&SUBSYS_09001039&REV_90\3&61AAA01&0&20.  bad value was:
                REG_MULTI_SZ =
                    PSched

    reset   Linkage\UpperBind for PCX1CR\{ABD04464-7120-11D4-98E3-0000863B0230}\009083664608.  bad value was:
                REG_MULTI_SZ =
                    PSched

    reset   Linkage\UpperBind for ROOT\MS_NDISWANIP\0000.  bad value was:
                REG_MULTI_SZ =
                    PSched

    <completed>

    This hasn't helped.

    It seems to me the problem occurs when then adapter tries to establish an IP address. It's at that point that the connections fails.

    Max
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    Expert Comment

    by:Cerebellum
    The Teredo Tunneling protocol indicates that IPv6 is installed.

    Go to Properties for the network card, find an item called 'Microsoft TCP/IP Version 6' or similar and remove it. This should fix our problem.

    Regards from Norway
    Leif Henriksen
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    Expert Comment

    by:indianelectron
    hi

    the address 169.254.xxx.xxx is assigned by the wibdows to itself when it failed to get in ip from the DHCP server. Use all the static address. U can do this

    Remove all firewalls.
    make ur machines tcpip settings as
    192.168.0.1 ur ip
    255.255.255.0  subnet mask
    192.168.0.xxx  ur router address

    DNS
    192.168.0.1

    Different network address and subnets on same network segment never communicates. Check all the machines have same network id and subnetmask.  
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    Author Comment

    by:MaxFL100
    Thank You.

    I tried this. Ipconfig shows the IP address as I entered it, but there's still no connection. Ipconfig /renew yields an error message saying that no adapter is in the state permissible for this operation.

    I'm coming around to the view that the problem is with the Ethernet card. I'll swap one into the slot from another machine and see if that works.

    Max
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    Expert Comment

    by:sunray_2003
    Once you put in a new ethernet card try to get the latest drivers for it . That makes a difference.

    post back how it all goes
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    LVL 27

    Expert Comment

    by:Asta Cu
    You've verified that there isn't a resource conflict?
    0
     

    Author Comment

    by:MaxFL100
    I've solved the problem by installing a new ethernet card and disabling the on-board one I had been using.

    With hindsight, the black screen should have told me the problem was hardware related, but I was fooled by the failure of the modem to work from a USB connection. I still don't understand why that is so.

    I'm very grateful for the replies, but I can't say anyone really earned the points.

    Max Davies
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    Expert Comment

    by:Steviek411
    Did you try my suggestion?
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    by:Asta Cu
    Personally speaking, I never care about the points.  Here to help when and where I can.  Having been here for many years and asked many questions, I always choose to award points to those who work to help me.  But, as always, a personal choice.  Again, I do not want points, just to be clear.

    I'm pleased your issue is resolved.
    Asta
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    Expert Comment

    by:Steviek411
    Thats great astaec. My last comment was not about who gets points and who doesn't. The poster of this question fixed his problem by disabling his built in NIC and installing a new one into his system. I am curious if he tried uninstalling and reinstall his built in NIC to see if that would of solve it instead of installing an additional card into his system. This would help to determine if it was hardware. And if it was hardware he should question the reliability of his motherboard. I tend to think that if something goes bad on the motherboard then it won't be long until something else goes bad on it too.
    0
     
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    Expert Comment

    by:Asta Cu
    Steviek411 - I agree 100%.  I always choose to "troubleshoot" issues vs. modifying I/O or replacing culprits because oftentimes, the problems that occur at any given point can/will return at some point.  MB and BIOS levels are critical to related issues, not to mention the obvious issues of resource conflicts and assignments.  Some MBs are very clear on what shares IRQs/resources, some not.  It's always down to the end-user level to 'dig' and fix.  But, again, that's my personal choice.  I ALWAYS want to get to the source of problems and fix them rather than trying to apply workarounds or bandaids if I can.  ":0)  We're on the same page in those regards.  Asta
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    LVL 1

    Accepted Solution

    by:
    PAQd, 500 points refunded.

    GhostMod
    Community Support Moderator
    0
     

    Author Comment

    by:MaxFL100
    Thanks to the two most recent contributors.

    The Ethernet port is built into the motherboard and so could only be disabled and couldn't be removed. There weren't any conflicts.

    This PC is a bit flaky at times; I've had numerous problems with the USB ports and have given up on the internal fax modem. It is a no-name generic from a local shop, to which I've added drives, cards, RAM etc. Also the power supply where I live is very poor and despite numerous quality surge protectors I've had several items blow.

    I'm resigned to changing the PC sometime soon, but I'm so put off by the whole hassle of trying to transfer lots of programs, many of which aren't on CDs, that I'll probably struggle on a bit longer.

    Thanks to everyone who responded to this problem.

    Max Davies
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    Expert Comment

    by:Asta Cu
    Good luck, I know the hassles well, unfortunately.  Might explore some imaging software to  help with the migration process, though unclear if the problems will come with that.  Norton Ghost, Partition Magic and others come to mind.
    0
     

    Author Comment

    by:MaxFL100
    I've tried Aloha Bob before, and deicdedly mixed results. Does anyone know if you can use Ghost to image the hard drive and them migrate it to a new PC. Doesn't Windows XP throw a fit when it boots in an unfamiliar machine?

    What I'd really like to do is to remove the main hard drive from this PC and install it in a new one, but I've always understood that issues with the Windows Registry prevents that. Is that correct?

    Max
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